Home / 643,457.43-887,941.65-353,062.62

Finding the Fourth Proportional to 643,457.43, 887,941.65 and 353,062.62

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Solution

The fourth proportional to 643,457.43, 887,941.65 and 353,062.62 is: 487,210.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,457.43 : 887,941.65 = 353,062.62 : x
  2. Step 2: Convert to fraction form
    643,457.43/887,941.65 = 353,062.62/x
  3. Step 3: Cross multiply
    643,457.43x = 887,941.65 × 353,062.62
  4. Step 4: Simplify right side
    643,457.43x = 313,499,001,820.71
  5. Step 5: Solve for x
    x = 313,499,001,820.71/643,457.43
  6. Step 6: Final answer
    x = 487,210.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.